Need help with Hallmark

Recently purchased four bracelets from estate auction. The Hallmark is a scribed .W or M. . At first I thought early Wilbert Manning but now I’m not to sure and because I’m travelling I don’t have my books with me. The are all bracelets with large cobble stone inlay.
Could someone help out here please?
Thanks
Judith


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He still does an engraved hallmark, he uses a WM now. Can you send pictures of the top, Wilbert does have a distinct style, thanks.

Three or four different bracelets by same artist.
Better late than never Jason. lol


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I was thinking you might ask Redirecting... here to see if this is his jewelry, similar look, just the wrong looking hallmark, maybe he etched it.